Sex is a form of self-soothing for some folks. It is meaningless - but so is everything and everyone else in their lives
There are three types of promiscuity: frequency, conditional-contextual, and standards.
In Frequency Promiscuity, the quantity of partners and sexual encounters is statistically abnormal - but some criteria and standards are maintained throughout with regards to mate selection, what little time is spent together, minimal emotions (liking the partner, affection, feeling good in his company), and behavioral choices.
In Standards Promiscuity, the numbers of sexual liaisons and disparate partners are not always high but there are no thresholds or benchmarks as to the type of partner chosen or which behaviors are deemed unacceptable: anyone and anything go.
In Conditional Promiscuity, women reward with sex anyone - even a "bad guy" - who is "nice" to them (attentive, protective, and possessive) and finds them irresistibly desirable. It is a meaningless transactional exchange: emotionless sex swapped for worn out pickup lines: better the wrong kind of attention than none.
The first type of promiscuity is not really casual sex: it involves getting to know the prospective sex partner however superficially and cursorily. The second type is compulsive (intended to ameliorate anxiety and depression) and ego dystonic or impulsive (reckless, emotionless, novelty-seeking behavior) and ego syntonic.
A heterosexual man who is frequency promiscuous would trawl bars or swipe dating apps to pick up partners for casual sex. But he would be selective as to the physical type of the partner, her psychology, and background. He would also not do drugs or get drunk senseless or visit a brothel. He would spend some time with her, getting to know her better and making up his mind whether he wants to copulate with her or not.
A heterosexual woman who is standards promiscuous will rarely have a one night stand but, when she does, will do it with anyone anywhere at any time. She would also get drunk senseless, do drugs, go to strip clubs, let herself be groped in public or by multiple men, even make herself available to gangbangs, and so on: no standards or inhibitions.
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